ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,471,435, issued on Nov. 11, was assigned to Beijing BOE Technology Development Co. Ltd. (Beijing).
"Light emitting device, manufacturing method thereof, display substrate and display apparatus" was invented by Xiaoyuan Zhang (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light emitting device, including a first electrode, a first carrier transport layer, a light emitting layer, a second carrier transport layer, and a second electrode, in this order, where a rate of injecting first carriers into the light emitting layer by the first carrier transport layer is greater than a rate of injecting second carriers into the light emitting layer by the...